Difference between revisions of "Perl eval"
From Teknologisk videncenter
m (New page: Perl eval can be used as a '''try''' and '''catch''' error recovery procedure <source lang="perl"> eval { # try }; if($@) { # catch } </source> Category:Perl) |
m |
||
| Line 1: | Line 1: | ||
| − | Perl eval can be used as | + | Perl eval can be used as '''try''' and '''catch''' exception handling. |
<source lang="perl"> | <source lang="perl"> | ||
eval | eval | ||
| Line 10: | Line 10: | ||
} | } | ||
</source> | </source> | ||
| + | = Throwing an exception = | ||
[[Category:Perl]] | [[Category:Perl]] | ||
| + | <source lang="perl"> | ||
| + | eval | ||
| + | { | ||
| + | # try | ||
| + | die "Exception text to be catched"; | ||
| + | }; | ||
| + | if($@) | ||
| + | { | ||
| + | # catch | ||
| + | } | ||
| + | </source> | ||
Revision as of 10:54, 22 March 2009
Perl eval can be used as try and catch exception handling.
eval
{
# try
};
if($@)
{
# catch
}
Throwing an exception
eval
{
# try
die "Exception text to be catched";
};
if($@)
{
# catch
}